Method of fabricating image input screen

Details Method of fabricating image input screen Method of fabricating image input screen

1978-04-20

1979-07-24

Lazarus, Richard B.

316 3, 316 5, H01J 902, H01J 920, H01J 9233

Patent

active

041621158

ABSTRACT:
An image intensifier tube comprising a sealed envelope having therein means for controllably liberating oxygen within the envelope, and an iput screen including an oxygen conditioned layer of fluorescent material and an overlying layer of photoemissive material which may be oxidized to improve the photo-to-electron conversion efficiency of the input screen.
A method of improving the conversion efficiency of an image intensifier tube input screen including the steps of exposing a layer of fluorescent material to oxygen prior to the deposition of an overlying layer of photoemissive material, and subsequently exposing the layer of photoemissive material to oxygen, if desired, after the tube envelope has been sealed.

REFERENCES:
patent: RE28751 (1976-03-01), Ball
patent: 2107352 (1938-02-01), Teves etal.
patent: 2391280 (1945-12-01), Teal

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